18630151620 has 96 divisors (see below), whose sum is σ = 53430529152. Its totient is φ = 4847689728.

The previous prime is 18630151601. The next prime is 18630151627. The reversal of 18630151620 is 2615103681.

It is not an unprimeable number, because it can be changed into a prime (18630151627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3126564 + ... + 3132516.

It is an arithmetic number, because the mean of its divisors is an integer number (556568012).

Almost surely, 2^18630151620 is an apocalyptic number.

18630151620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18630151620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26715264576).

18630151620 is an abundant number, since it is smaller than the sum of its proper divisors (34800377532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18630151620 is a wasteful number, since it uses less digits than its factorization.

18630151620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7221 (or 7219 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The spelling of 18630151620 in words is "eighteen billion, six hundred thirty million, one hundred fifty-one thousand, six hundred twenty".